Mechanism for applying coating to shells and other articles



H. W. DAY. MECHANISM FOR APPLYING COATING T0 SHELLS AND OTHER ARTICLES.

APPLICATION FILED JUNE 22, 1917- 1,847,994.

2 SHEETS-SHEET Invenior Herbe ri 74117003,

Patented July 27, 1920.

H. W. DAY. MECHANISM FOR APPLYING COATING T0 SHELLS AND OTHER ARTICLES.

AP?LICATION man JUNE 22. 1911. 1,347,994, Patented July 27, 1920.

' 2 SHEETSSHEET2.

UNITED; STATES PATENT. OFFICE- HERBERT W. DAY, OF WOLLASTON, MASSACHUSETTS. ASSIGNOR TO SPRAY ENGI- NEERING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSA- CHUS-ETTS.

MECHANISM FOR APPLYING COATING T SHELLS AND OTHER4ARTICLES.

To all whom it may concern:

Be it known that I. HERBERT IV. DAY, a citizen of the United States. and a resident of IVollaston, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Mechanism for Applying Coating to Shells and other Articles, of

which the following description, in connectlon with the accompanying drawings. is a speclfication. llke characters on the drawings representing like parts.

This invention relates, to mechanism for applying paint or other coating material to ammunition shells and other articles and more particularly to means for applying coating material to the exterior and to the interior of large and heavy shells.

In order that the principle of my inven ,tion may be readily understood. I have d1s tions and in the application of a coating to other articles whether hollow or solid.

Referring to those specific applications orembodiments of my invention herein shown. an important object thereof is to provide means whereby hollow articles. such for example as an ammunition shell. may be readily coated. in certain cases exteriorly and in other cases interiorly, 01' both exteriorly and interiorly. so that a large num-- ber of such articles may be treated in a minimum length of time.

Referring more particularly to the drawings and first t0 thatform of my invention shown in Figs. 1 and 2. wherein I have provided means for coating the shell or other article exteriorly. I have therein represented a table or support at 1, it being provided with suit- Specification of Letters Patent.

like member 5.

Patented uly 2 7, 1920.

Application filed June 22, 1917. Serial No. 176,317.

able uprights 2 connected if desired by cross pieces not herein illustrated. The said table or support 1 is provided with a suitable opening 3 extending vertically therethrou h and having therein a suitable sleeve-liIre bearing 4 formed with or extending from a yoke like member 5 or frame secured to said table 1 and adapted for the reception of a shaft 6, the lower end 7 whereof is stepped'in the lower portion of said yoke- Above said opening' 3 is provided a member 8 pinned to said shaft, and between the bearing 1 and member 8 is interposed a suitable anti-fraction device such as a ball bearing 9. Upon the upper end of said shaft 6 is adapted to be securely supported the shell or 0t er article 10 that is to be coated and which in this case is an ammunition shell. The said shell is positioned within a casing 11, which may be of any suitable form. Entering said casing 11 is the coating or spray means preferably composed of one or more spray nozzles. In this form of my invent-ion. I have represented three spray nozzles 12, 13, 11, which are of any suitable character. but preferably are of the general type shown in the patent to Aubrey G. Eneas, No. 1,101,261, dated June 23, 1911. Prefer-ably the said nozzles are so relatively positioned that the material discharged therefrom coats the entire lateral surface and the upper'end of the shell when the latter is rotated, as indicated in Fig. 1.

The nozzle 12 is mounted-upon the end of apipe 15 and the nozzles 13 and 14 are mounted upon a pipe 16, both of which pipes are in communication with a pipe 17 through which the material is received from any suitable source of supply and preferably,

though not necessarily, through instrumentalities like those shown in my Patent No. 1,201,219. dated October 10, 1916.

Referring to that specific means herein shown for supplying coating material to the one or more spray nozzles. the paint or other liquid that is to be applied to the shell is contained within a suitable tank 18, preferably having a loose fitting cover and supported by the discharge pipe 19 above the level of the top of the shell 10. The'said discharge pipe 19 is suitably supported at 20 upon or by the table or support 1 and if desired may have a suitable outlet through which the contents of the tank 18 may be drawn oil". The said pipe 19 is herein represented as provided with a suitable valve 21. and is also represented as provided with a fitting 22 having tapped thereinto a discharge pipe 23 provided with a valve 24.

Secured to the discharge pipe 23 is a fitting or valve casing 25 containing a valve 26- which while it may be of any suitable type is preferably a charge or measuring valve similar to the valve 56 shown in my said Patent N 0. 1,201,219, and which therefore need not be more fully described. Operatively connected with and extending from said valve 26 is an arm 27 to which is pivotally connected a link 28 reaching downward to a treadle, not shown, and by means of which the valve may be periodically opened. Any other suitable means to operate the said valve may be employed. Also operatively connected to the said valve 26 is an arm 29 to which is pivotally connected a link 30 itself pivotally connected to an arm 31 rigid with a compressed air control valve .32, whereby when the valve 26 is open, air

may be admitted through the valve 32 to discharge the air through the valve to the several nozzles 12, 13, 14. Said valve 32 is preferably similar to the corresponding valve shown in my Serial No. 137,945,

Air under pressure is admitted to the valve '32 from any suitable source, herein indicated at 33, into a coupling 34, to which is connected an exhaust pipe 35 and a pipe 36 leading to a pump-like or bellows member 37 preferably similar to that shown in my said co-pending application'Serial No. 137,945. The said pump-like member 37 is preferably provided with ball check valves and leading from one of said valves is a pipe 38 extending to and in'co'mmunicaticn with a pipe 40 to the source 18 of coating supply.

The pipe 36 is in communication with the valve 26 and hence a circulation may be and is effected through the said valve as set forth in my said co-pending application. In order to operate the pump member 37 I provide a rod 41 that is preferably connected to the treadle as set forth in my said. copending application.

The shell 10 may be supported upon the upper end of the shaft 6 in any suitable manner. Herein for the purpose and as shown most clearly in Fig. 2, I have provided a bracket 42 supported upon a suitable standard 43 and having two spaced rolls 44 to engage the rotating surface of the shell. Preferably substantially opposite said roll 44 I provide a bar 45 having a roll 46 to co-pendin t application filed DecenIber 20, 1916..

engage the shell and adjustably secured by bolts 47 entering elongated slots, to the door or other closure 48 of the casing, whereby when the door is closed the roll 46 engages the shell, thus providing a three-point support for the upright shell. I I

I provide any suitable means to rotate the upright shaft 6 whereon the shell 10 or other article is supported. Herein for the pur pose I have provided the said shaft 6 with a disk 49 fast thereon and below the table or support 1, and with which frictionally engages a driving pinion 50 fast upon a horizontal shaft 51 that is mounted in a suitable bearing 52 in said yoke-like member 5 and in a bearing 53 upon the upper end of a post or rod 54 that is mounted for vertical movemounted upon said shaft 51 is a pulley 56 about which passes a belt or driving band 57 that also passes about a pulley 58 fast on I a short shaft 59 mounted in a suitable bearing 60 in a bracket 61, said bracket being supported at the upper end of a standard 62 rising from and secured to the table or support. Upon the shaft 59 is a fan 63 that is mounted in an outlet 64 of the casting 11, the purpose of said fan being to exhaust from the casing surplus coating material and fumes or vapors incident to the coating operations.

Preferably I provide means whereby the closing of the casing 11 initiates the relative movement ofthe shell or other article and I the coating means, and herein and preferably the rotation of the shell or other article to be coated, and oonversely'the opening of the casing stops such rotation. For this purpose I have herein represented the door or closure 48 as mounted for rocking movement upon an upright rod 65 suitably supported in the casing and passing downwardly through an opening in the table or support 1, and to the lower end of which is suitably connected a rock arm 66 that is pivotally and preferably adjustably con-. nected to a link 67 which in turn is pivotally connected to an arm 68, itself pivotally connected to the lower end of and serving to support the rod 54. Preferably also mount: ed upon the rod 65 in proximity to the disk 49 is a brake 69. The construction and rela tion of parts are such that when the door 48 is closed the roll 46 is brought into guiding or supporting engagement with the shell 10 and the pinion 50 is lifted into engagement with the disk 49, it being understood that the bearing 52 for the shaft 51 is such as to permit a rocking movement of said shaft 51. Conversely upon'the opening of the door the shaft 51 is rocked downward withdrawing the pinion 50 from the disk 49 and the brake 69 is brought into engagement with the periphery or edge portion of the disk 49, thereby quickly stopping the same.

Instead of friction drive means forthe ,shell or other article 10 any other suitable drive means may be provided, as for example toothed gearing.

Having thus described several illustrative embodiments of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims:

1. Mechanism for applying coating comprising an article support, coating means, an inclosing casing for said article support and having a closure, driving means for the article support, and means {operatively connected to said closure to impart relative movement to said coating means and the article support. i

2. Mechanism for applying coating comprising an article support, coating means, an inclosing casing for said'article support and having a closure, means to impart relative movement to the article support and coating means, and means operatively connected to said closure'to move said means for im parting said relative movement.

3. Mechanism for applying coating comprising an article support, coating means, an inclosing casing for said article support and having a closure, driving means for said coating means, and means operatively conmeeting said closure and driving means to rotate the article support.

4. Mechanism for applying coating comprising an article support, coating means, an

inclosing casing for said article support and having a closure, driving means for the ar-.

L ticle support, a brake, and means operatively connected with said closure.v to control said brake. i

5. Mechanism for applying coating comprising an article support, coating'means, an inclosing casing for said article support and having a closure, driving means for thearticle support; a brake, and means connected to said closure whereby closing movement of said closure moves said article support, and opening movement thereof stops said driving means and applies said brake.

6. Mechanism for applying coating comrisin an article su ort an inclosin casing therefor havinga door, means for containing a predetermined quantity of coating material, means forcibly to discharge said material upon said article, driving mechanism for the article sup )ort, and means operatively connecting said door and said driving means. 1

T. Mechanism for applying coating comprising an article support. an inclosing casing therefor having a door, and guiding means for the article moved into guiding position by movement of the door.

V 8. Mechanism for applying coating comprising .an article support, means to rotate said support, a casing inclosing said article upon the support, a door for said casing, and means adapted guidingly to engage a surface of the article to, be coated, said means being connected to said door.

9. Mechanism for applying coating comprising in combination, an article support, an inclosing casing for said article support, driving means for the article support a plurality of spraying devices adapted simultaneously to coat an end and the lateral surface of an article upon said article support and means cooperating with said spraying devices for discharging therethrough a measured quantity of the coating material.

10. Mechanism for applying coating comprising an upright article support, an inclosing casing for the article support, a pluthe upper end of the article upon said ar-' ticle support and means cooperating with,

said spraying devices for discharging therethrough a measured quantity of the coating material.

11. Mechanism for. applying coating comprising an article support, an inclosing casing therefor having means to contact with the lateral surface of the article upon said support, a door for said casing, andmeans upon said door also to contact with the lateral surface of said article upon the support.

12. Mechanism for applying coating comprising a casing, an article support therein, means to drive the article support, a closed door for the casing, and means whereby the opening of the door stops the driving of the article upon the article support.

13. Mechanism for applying coating comprising a casing, an article support therein, means to rotate said article support, a closed door for the casing, and means whereby the" 12, 13, 14, a casing 11 inclosing the article upon the support and said coating means,

driving means 49,50 for the article support, a door 48 for the casing, and operative connections between said door and said driving means 49, 50.

15. Mechanism for applying coating comprising an article support 8, an inclosing casing 11 for the article upon the support, driving means 49, 50 for the article support. a door 48 for the casing, a brake for the driving means 49, and means to apply said brake and relatively to separate the driving means 49, 50 upon the opening of the door.

16. Mechanism for ap lying coating comprising an upright artic e support, a closing casing 11 for the article thereon, a door 48 for said casing, driving means 49, 50 for the article support, a brake 69 operatively connected to said door 48, and means oper-' atively connecting the bearing of the driving means 50 and the said door. 10

In testimony whereof I have signed my name to this specification.

HERBERT W; DAY. 

